Remove BackgroundHTMLInputStream

sky/engine/core/html/parser/BackgroundHTMLInputStream.cpp

-/*
- * Copyright (C) 2013 Google, Inc. All Rights Reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GOOGLE INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "core/html/parser/BackgroundHTMLInputStream.h"
-
-namespace blink {
-
-BackgroundHTMLInputStream::BackgroundHTMLInputStream()
-    : m_firstValidCheckpointIndex(0)
-    , m_firstValidSegmentIndex(0)
-    , m_totalCheckpointTokenCount(0)
-{
-}
-
-void BackgroundHTMLInputStream::append(const String& input)
-{
-    m_current.append(SegmentedString(input));
-    m_segments.append(input);
-}
-
-void BackgroundHTMLInputStream::close()
-{
-    m_current.close();
-}
-
-HTMLInputCheckpoint BackgroundHTMLInputStream::createCheckpoint(size_t tokensExtractedSincePreviousCheckpoint)
-{
-    HTMLInputCheckpoint checkpoint = m_checkpoints.size();
-    m_checkpoints.append(Checkpoint(m_segments.size(), tokensExtractedSincePreviousCheckpoint));
-    m_totalCheckpointTokenCount += tokensExtractedSincePreviousCheckpoint;
-    return checkpoint;
-}
-
-void BackgroundHTMLInputStream::invalidateCheckpointsBefore(HTMLInputCheckpoint newFirstValidCheckpointIndex)
-{
-    ASSERT(newFirstValidCheckpointIndex < m_checkpoints.size());
-    // There is nothing to do for the first valid checkpoint.
-    if (m_firstValidCheckpointIndex == newFirstValidCheckpointIndex)
-        return;
-
-    ASSERT(newFirstValidCheckpointIndex > m_firstValidCheckpointIndex);
-    const Checkpoint& lastInvalidCheckpoint = m_checkpoints[newFirstValidCheckpointIndex - 1];
-
-    ASSERT(m_firstValidSegmentIndex <= lastInvalidCheckpoint.numberOfSegmentsAlreadyAppended);
-    for (size_t i = m_firstValidSegmentIndex; i < lastInvalidCheckpoint.numberOfSegmentsAlreadyAppended; ++i)
-        m_segments[i] = String();
-    m_firstValidSegmentIndex = lastInvalidCheckpoint.numberOfSegmentsAlreadyAppended;
-
-    for (size_t i = m_firstValidCheckpointIndex; i < newFirstValidCheckpointIndex; ++i)
-        m_checkpoints[i].clear();
-    m_firstValidCheckpointIndex = newFirstValidCheckpointIndex;
-
-    updateTotalCheckpointTokenCount();
-}
-
-void BackgroundHTMLInputStream::updateTotalCheckpointTokenCount()
-{
-    m_totalCheckpointTokenCount = 0;
-    size_t lastCheckpointIndex = m_checkpoints.size();
-    for (size_t i = 0; i < lastCheckpointIndex; ++i)
-        m_totalCheckpointTokenCount += m_checkpoints[i].tokensExtractedSincePreviousCheckpoint;
-}
-
-}